He was just five years old when he had clocked up a half century of parkruns and now, at the ripe old age of seven, Adam Young has completed a century of 5km runs.

Eastern Daily Press: Adam Joy (right) after completing his 100th parkrun with father Peter (left) at Catton Park. PIC: Peter WalshAdam Joy (right) after completing his 100th parkrun with father Peter (left) at Catton Park. PIC: Peter Walsh (Image: Archant)

The youngster braved the cold and ice to race around Catton Park, on the outskirts of Norwich, for his 100th parkrun which is 310.686 miles or roughly the equivalent of running from Norwich to the Scottish borders.

The Old Catton Junior School pupil said he felt 'very tired' after leading home his dad Peter, 37, in a time of 28m 28secs today (Saturday).

The time was well outside his personal best of 26min 42secs but it did not matter for Adam or his proud family who were all delighted to have reached the impressive landmark.

Adam, who ran his first parkrun on January 1 2014, said: 'I feel really pleased I've done it.'

His dad, who lives at Catton Grove Road, said it was an 'amazing achievement'.

Mr Young, who used to do parkrun at Eaton Park but started at Catton after it was launched there in 2013, said his son used to watch him running but then wanted to join in himself.

He said his son, who was just four when he started doing parkrun, became determined to achieve the 100 landmark while he was still seven after seeing eight year old Henry Kerrison had notched up his century of parkruns at Eaton Park last year.

Mr Young said: 'Adam really wanted to do it before his eighth birthday.'

Adam got a special mention before the race at Catton Park started.

David Parker, run director at the Catton parkrun said it was an 'incredible' achievement.

He said: 'I remember when he first started. He sets a good pace and runs steady. He chats to his dad all the way round - his dad is really encouraging.

'It actually typifies the spirit here at Catton parkrun. There's a lot of families and young kids.'